Cement-block machine.



PATENT ED APR. 9, 1907.

J. W. HERRING.

CEMENT BLOCK MACHINE.

APPLICATION FILED OCT-20. 1906. I

JAMES W. HERRING, OF MOUNT CARMEL, PENNSYLVANIA.

CEIVIENT-BLOCK MACHINE.

Specification of Letters Patent.

Patented April 9, 1907.

Application filed October 20,1906- Serial No. 339.836-

To 06% whom it may concern/.-

Be it known that I, JAMES W. HERRING, a citizen of the United States, residing at Mount Carmel, in the county of Nor-thumberland and State of Pennsylvania, have invented certain new and useful Improvements in Cement-Block Machines, of which the following is a specification.

This invention relates to the general subject of plastic block and earthenware apparatus, and has special reference to that type of block molding machines designed for molding cement blocks for building and other purposes.

To this end the invention has in view a simple, practical, and easily manipulated cement-block machine in the form of an expansible and contractible mold having a very wide range of adjustment to provide for making cement blocks from a few inches to siX or more feet in length, as may be desired, according to the character of block or article to be molded.

With these and many other objects in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

The essential features of the invention involved in the novel relation and construction of the mold parts are necessarily susceptible to some structural change without departing from the scope of the invention; but a preferred embodiment thereof is shown in the accompanying drawings, in which Figure 1 is a perspective view of a cement block machine or mold embodying the present invention and shown in the position for use. Fig. 2 is a plan View thereof, showing by full and dotted lines the expansible and contractible character of the construction. Fig. 3 is a detail in perspective of one of the side wall members or parts.

Like references designate corresponding parts in the several figures of the drawings.

The invention as an entirety primarily consists of what may be characterized as an expansible and contractible mold. This mold consists of a plurality of right-angularly arranged and adjustablyconnected side wall plates or boards'l. These boards are of any desired width and length, according to the maximum size of mold to be constructed, and each of the same consists of a straight rectangular plate or board provided at one end above the plane of the bottom corner of that end with an of'lstanding coupling-bracket 2. This couplingbracket of each side wall-plate 1 preferably consists of a substantial casting formed with an attaching-arm 3, bolted or otherwise rigidly fastened flat upon the outer side of the plate and also formed with an ofl'standing or offset keeper-cuff l, provided therein with a slideopening 5, lying in a plane at right angles to the vertical longitudinal plane of the plate or board and substantially flush with the contiguous end thereof, as may be plainly seen from the plan in Fig. 2 of the drawings. The outer side of the keeper-cull 4 of each coupling-bracket is fitted with a clampingscrew 6, whose threaded stem engages a screw-opening 7, formed in said side of the cufl.

In setting up the mold the side wall-plates 1 are assembled in right-angular abutting relation, and at each corner of the mold the coupling-bracket 2 of one side wall-plate receives in the slide opening thereof the straight and unobstructed portion of the adjoining side wall-plate. This arrangement is preserved throughout the entire moldbody, so that it will be obvious that by loosening the clamping-screws 6, the diametrically-opposite side walls can be slid toward and from each other, with the result of providing for contracting or widening the molding chamber or space confined within the assembled upright walls.

By reason of locating the coupling-brackets above the plane of the bottom edges of the side wall plates 1 said bottom edges of said plates are permitted to rest flat upon a suitable molding table or board 8, which constitutes the bottom of the mold-wall, at the same time being entirely separate from the mold proper to facilitate the handling and adjustment of the latter.

I claim A cement-block machine comprising an expansible and contractible mold-body consisting of a plurality of flat upright rightangularly-related side wall-plates each of which, at one end, crosses and projects beyond the end of another plate, each .of said I In testimony wheieof I hereunto aflix my side Wall-plates being also provided at one signature in the presence ofatwo Witnesses.

end above the lane of its bottom edge with an offstanding bracket provided with a slide- 7 JAMES HERRING' opening receiving the unobstructed end por- Witnesses:

"tion of the adjoining side Wall-plate, and a D. W. KEHLER,

clamping-screw carried by each bracket. JEFFERSON SHIPMAN, 

